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prob_020 (2) - 20 REASONING The relation tan = v2(Equation...

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20. REASONING The relation 2 tan v rg θ = (Equation 5.4) determines the banking angle that a banked curve of radius r must have if a car is to travel around it at a speed v without relying on friction. In this expression g is the magnitude of the acceleration due to gravity. We will solve for v and apply the result to each curve. The fact that the radius of each curve is the same will allow us to determine the unknown speed. SOLUTION According to Equation 5.4, we have
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